|Name||Peebles Dolomite, Lilley and Bisher Formations, Undivided|
Sedimentary > Carbonate > Dolostone (Bed)Peebles: bluish gray weathers light gray; planar to irregular, thick to massive bedded; 0 to 120 feet thick; vuggy to cavernous porosity; cliffs former. Lilley: dolomite; bluish gray to gray weathers reddish gray to gray; planar to irregular, thin to thick bedded; 20 to 80 feet thick; fossiliferous. Bisher Formation: dolomite; bluish gray to gray weathers yellowish-orange; argillaceous and silty in part; planar to lenticular, thin to thick bedded; 20 to 90 feet thick.
Sedimentary > Clastic > Mudstone > ShaleLilley Formation: minor shale; Bisher Formation: minor shale
Sedimentary > Chemical > ChertLilley Formation: minor chert.
Sedimentary > Carbonate > LimestoneLilley Formation: minor limestone.
|Comments||Secondary unit descriptions from USGS Lexicon website (OH017) and OH006, OH007.|
Slucher, E.R., (principal compiler), Swinford, E.M., Larsen, G.E., and others, with GIS production and cartography by Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey Map BG-1, version 6.0, scale 1:500,000.
Rexroad, C.B. and Kleffner, M.A., 1984, The Silurian stratigraphy of east-central Kentucky and adjacent Ohio; Field trip no.5: Geological Society of America, Southeastern Section, Guidebook for Field Trips, Joint meeting of Geological Society of America, Southeastern Section and North-Central Section, Lexington, KY, April, 1984, p. 44-65.
Kleffner, M.A., 1990, Wenlockian (Silurian) conodont biostratigraphy, depositional environments, and depositional history along the eastern flank of the Cincinnati arch in southern Ohio: Journal of Paleontology, v. 64, no. 2, p. 319-328.
USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/
|Counties||Adams - Clinton - Fayette - Highland - Pike - Ross - Scioto|